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1.
J Exp Med ; 221(7)2024 Jul 01.
Article in English | MEDLINE | ID: mdl-38829369

ABSTRACT

Cryptosporidium is an enteric pathogen and a prominent cause of diarrheal disease worldwide. Control of Cryptosporidium requires CD4+ T cells, but how protective CD4+ T cell responses are generated is poorly understood. Here, Cryptosporidium parasites that express MHCII-restricted model antigens were generated to understand the basis for CD4+ T cell priming and effector function. These studies revealed that parasite-specific CD4+ T cells are primed in the draining mesenteric lymph node but differentiate into Th1 cells in the gut to provide local parasite control. Although type 1 conventional dendritic cells (cDC1s) were dispensable for CD4+ T cell priming, they were required for CD4+ T cell gut homing and were a source of IL-12 at the site of infection that promoted local production of IFN-γ. Thus, cDC1s have distinct roles in shaping CD4+ T cell responses to an enteric infection: first, to promote gut homing from the mesLN, and second, to drive effector responses in the intestine.


Subject(s)
CD4-Positive T-Lymphocytes , Cryptosporidiosis , Cryptosporidium , Dendritic Cells , Mice, Inbred C57BL , Animals , Dendritic Cells/immunology , Dendritic Cells/parasitology , Cryptosporidiosis/immunology , Cryptosporidiosis/parasitology , CD4-Positive T-Lymphocytes/immunology , CD4-Positive T-Lymphocytes/parasitology , Mice , Cryptosporidium/immunology , Cryptosporidium/physiology , Intestines/immunology , Intestines/parasitology , Interleukin-12/metabolism , Interleukin-12/immunology , Interferon-gamma/metabolism , Interferon-gamma/immunology , Th1 Cells/immunology , Lymph Nodes/immunology , Lymph Nodes/parasitology
2.
Viruses ; 16(3)2024 02 21.
Article in English | MEDLINE | ID: mdl-38543693

ABSTRACT

Cervical cancer is primarily caused by Human Papillomavirus (HPV) infection and remains a significant public health concern, particularly in Latin American regions. This comprehensive narrative review addresses the relationship between Human Papillomavirus (HPV) and cervical cancer, focusing on Latin American women. It explores molecular and immunological aspects of HPV infection, its role in cervical cancer development, and the epidemiology in this region, highlighting the prevalence and diversity of HPV genotypes. The impact of vaccination initiatives on cervical cancer rates in Latin America is critically evaluated. The advent of HPV vaccines has presented a significant tool in combating the burden of this malignancy, with notable successes observed in various countries, the latter due to their impact on immune responses. The review synthesizes current knowledge, emphasizes the importance of continued research and strategies for cervical cancer prevention, and underscores the need for ongoing efforts in this field.


Subject(s)
Papillomavirus Infections , Papillomavirus Vaccines , Uterine Cervical Neoplasms , Humans , Female , Uterine Cervical Neoplasms/epidemiology , Uterine Cervical Neoplasms/prevention & control , Uterine Cervical Neoplasms/pathology , Human Papillomavirus Viruses , Papillomavirus Infections/epidemiology , Papillomavirus Infections/prevention & control , Latin America/epidemiology , Papillomaviridae/genetics , Vaccination
3.
Mucosal Immunol ; 17(3): 387-401, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38508522

ABSTRACT

Cryptosporidium causes debilitating diarrheal disease in patients with primary and acquired defects in T cell function. However, it has been a challenge to understand how this infection generates T cell responses and how they mediate parasite control. Here, Cryptosporidium was engineered to express a parasite effector protein (MEDLE-2) that contains the major histocompatibility complex-I restricted SIINFEKL epitope which is recognized by T cell receptor transgenic OT-I(OVA-TCR-I) clusters of differentiation (CD)8+ T cells. These modified parasites induced expansion of endogenous SIINFEKL-specific and OT-I CD8+ T cells that were a source of interferon-gamma (IFN-γ) that could restrict growth of Cryptosporidium. This T cell response was dependent on the translocation of the effector and similar results were observed with another secreted parasite effector (rhoptry protein 1). Although infection and these translocated effector proteins are restricted to intestinal epithelial cells, type 1 conventional dendritic cells were required to generate CD8+ T cell responses to these model antigens. These data sets highlight Cryptosporidium effectors as potential targets of the immune system and suggest that crosstalk between enterocytes and type 1 conventional dendritic cells is crucial for CD8+ T cell responses to Cryptosporidium.


Subject(s)
CD8-Positive T-Lymphocytes , Cryptosporidiosis , Cryptosporidium , Dendritic Cells , CD8-Positive T-Lymphocytes/immunology , Dendritic Cells/immunology , Animals , Cryptosporidiosis/immunology , Mice , Cryptosporidium/immunology , Interferon-gamma/metabolism , Protozoan Proteins/metabolism , Protozoan Proteins/immunology , Antigens, Protozoan/immunology , Humans , Mice, Transgenic , Lymphocyte Activation/immunology , Epitopes, T-Lymphocyte/immunology , Mice, Inbred C57BL , Intestinal Mucosa/immunology , Intestinal Mucosa/parasitology , Mice, Knockout
4.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1560468

ABSTRACT

Introducción: las complicaciones más graves de la diabetes mellitus son la cetoacidosis diabética y el estado hiperglucémico hiperosmolar, muchas veces se observan alteraciones clínicas y laboratoriales que abarcan los dos espectros y que denominamos estado mixto, representan cerca del 50% de las hospitalizaciones en el servicio de urgencias en pacientes diabéticos. Objetivo: determinar las complicaciones intrahospitalarias y los desenlaces de los estados hiperglucémicos en pacientes adultos internados en el Hospital Nacional, Itauguá, Paraguay, en el periodo 2015-2022. Metodología: se aplicó un diseño de cohortes retrospectivas. Se seleccionaron pacientes con diagnósticos de diabetes mellitus tipo 1 y tipo 2, mayores de 18 años, de ambos sexos, agrupados en tres cohortes que corresponden a cada una de las descompensaciones agudas de la diabetes mellitus. La muestra estuvo conformada por 180 pacientes distribuidos en tres grupos de cohortes con 60 pacientes cada una. Resultados: 51% correspondió al sexo masculino. Se halló mayor desarrollo de eventos cardiovasculares, infecciones intrahospitalarias, requerimiento de cuidados intensivos y mortalidad en la cohorte con estado hiperosmolar. Conclusión: la cohorte con estado hiperosmolar hiperglucémico se caracterizó por la mayor cantidad de complicaciones.


Introduction: The most serious complications of diabetes mellitus are diabetic ketoacidosis and the hyperosmolar hyperglycemic state. Clinical and laboratory alterations are often observed that cover both spectrums and which we call a mixed state. They represent close to 50% of hospitalizations in the service. of emergencies in diabetic patients. Objective: To determine in-hospital complications and outcomes of hyperglycemic states in adult patients admitted to the Hospital Nacional, Itauguá, Paraguay, in the period 2015-2022. Methodology: A retrospective cohort design was applied. Male and female patients with diagnoses of type 1 and type 2 diabetes mellitus, who were over 18 years of age, were selected and grouped into three cohorts that corresponded to each of the acute decompensations of diabetes mellitus. The sample was made up of 180 patients distributed into three cohort groups with 60 patients each. Results: Fifty one percent were male. A greater development of cardiovascular events, hospital-acquired infections, intensive care requirements and mortality were found in the cohort with hyperosmolar state. Conclusion: the cohort with hyperglycemic hyperosmolar state was characterized by the highest number of complications.

5.
bioRxiv ; 2023 Nov 13.
Article in English | MEDLINE | ID: mdl-38014026

ABSTRACT

Cryptosporidium is an enteric pathogen that is a prominent cause of diarrheal disease. Control of this infection requires CD4+ T cells, though the processes that lead to T cell-mediated resistance have been difficult to assess. Here, Cryptosporidium parasites that express MHCII-restricted model antigens were generated to dissect the early events that influence CD4+ T cell priming and effector function. These studies highlight that parasite-specific CD4+ T cells are primed in the draining mesenteric lymph node (mesLN) and differentiate into Th1 cells in the gut, where they mediate IFN-γ-dependent control of the infection. Although type 1 conventional dendritic cells (cDC1s) were not required for initial priming of CD4+ T cells, cDC1s were required for CD4+ T cell expansion and gut homing. cDC1s were also a major source of IL-12 that was not required for priming but promoted full differentiation of CD4+ T cells and local production of IFN-γ. Together, these studies reveal distinct roles for cDC1s in shaping CD4+ T cell responses to enteric infection: first to drive early expansion in the mesLN and second to drive effector responses in the gut.

6.
Molecules ; 28(19)2023 Oct 04.
Article in English | MEDLINE | ID: mdl-37836772

ABSTRACT

Antibiotic resistance is a global threat to public health, and the search for new antibacterial therapies is a current research priority. The aim of this in silico study was to test nine new fluoroquinolones previously designed with potential leishmanicidal activity against Campylobacter jejuni, Escherichia coli, Neisseria gonorrhoeae, Pseudomonas aeruginosa, and Salmonella typhi, all of which are considered by the World Health Organization to resistant pathogens of global concern, through molecular docking and molecular dynamics (MD) simulations using wild-type (WT) and mutant-type (MT) DNA gyrases as biological targets. Our results showed that compound 9FQ had the best binding energy with the active site of E. coli in both molecular docking and molecular dynamics simulations. Compound 9FQ interacted with residues of quinolone resistance-determining region (QRDR) in GyrA and GyrB chains, which are important to enzyme activity and through which it could block DNA replication. In addition to compound 9FQ, compound 1FQ also showed a good affinity for DNA gyrase. Thus, these newly designed molecules could have antibacterial activity against Gram-negative microorganisms. These findings represent a promising starting point for further investigation through in vitro assays, which can validate the hypothesis and potentially facilitate the development of novel antibiotic drugs.


Subject(s)
Fluoroquinolones , Quinolones , Fluoroquinolones/pharmacology , Fluoroquinolones/chemistry , Escherichia coli/metabolism , Molecular Docking Simulation , Anti-Bacterial Agents/chemistry , Quinolones/chemistry , DNA Gyrase/chemistry , Drug Resistance, Bacterial , Microbial Sensitivity Tests
7.
Knee Surg Sports Traumatol Arthrosc ; 31(12): 5485-5495, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37812251

ABSTRACT

PURPOSE: Meniscal tears are common and may impair knee function and biomechanics. This meta-analysis compared meniscal repair versus resection in patients with symptomatic meniscal tears in terms of patient-reported outcomes measures (PROMs), joint width, surgical failure, and rate of progression to osteoarthritis (OA) at conventional radiography. METHODS: This study was conducted according to the 2020 PRISMA statement. In August 2023, the following databases were accessed: PubMed, Web of Science, Google Scholar, and Embase. Two reviewers independently performed the analysis and a methodological quality assessment of the included studies. All the clinical investigations which compared repair versus resection of meniscal tears were accessed. RESULTS: Data from 20 studies (31,783 patients) were collected. The mean BMI was 28.28 ± 3.2 kg/m2, and the mean age was 37.6 ± 14.0 years. The mean time elapsed from injury to surgery was 12.1 ± 10.2 months and the mean medial joint width was 4.9 ± 0.8 mm. Between studies comparability at baseline was found in age, women, BMI, time from injury to surgery and length of the follow-up, PROMs, medial joint width, and stage of OA. The resection group demonstrated a greater Lysholm score (P = 0.02). No difference was found in the International Knee Documentation Committee (P = 0.2). Nine studies reported data on the rate of failures at a mean of 63.00 ± 24.7 months. No difference was found between the two groups in terms of persistent meniscal symptoms (P = 0.8). Six studies reported data on the rate of progression to total knee arthroplasty at a mean of 48.0 ± 14.7 months follow-up. The repair group evidenced a lower rate of progression to knee arthroplasty (P = 0.0001). Six studies reported data on the rate of advanced knee OA at a mean of 48.0 ± 14.7 months of follow-up. The repair group evidenced a lower rate of advanced knee OA (P = 0.0001). No difference was found in the mean joint space width (P = 0.09). CONCLUSION: Meniscal repair is associated with a lower progression to knee osteoarthritis at approximately six years of follow-up compared to partial meniscectomy. No difference in PROMs, medial joint width, and failures were evidenced. LEVEL OF EVIDENCE: Level III, meta-analysis.


Subject(s)
Arthroplasty, Replacement, Knee , Knee Injuries , Osteoarthritis, Knee , Humans , Female , Young Adult , Adult , Middle Aged , Meniscectomy/adverse effects , Arthroplasty, Replacement, Knee/adverse effects , Menisci, Tibial/diagnostic imaging , Menisci, Tibial/surgery , Knee Joint/surgery , Osteoarthritis, Knee/etiology , Osteoarthritis, Knee/surgery , Knee Injuries/surgery , Arthroscopy , Retrospective Studies
8.
Am J Cardiol ; 206: 210-218, 2023 11 01.
Article in English | MEDLINE | ID: mdl-37708753

ABSTRACT

Data are limited on whether the causes of emergency department (ED) encounters for cardiovascular diseases (CVDs) and associated clinical outcomes vary by frailty status. Using the United States Nationwide ED Sample, selected CVD encounters (acute myocardial infarction [AMI], ischemic stroke, atrial fibrillation [AF], heart failure [HF], pulmonary embolism, cardiac arrest, and hemorrhagic stroke) were stratified by hospital frailty risk score (HFRS). Logistic regression was used to determine the adjusted odds ratios (aORs) and 95% confidence intervals (CIs) of ED mortality among the different frailty groups. A total of 8,577,028 selected CVD ED encounters were included. A total of 5,120,843 (59.7%) had a low HFRS (<5), 3,041,699 (35.5%) had an intermediate HFRS (5 to 15), and 414,485 (4.8%) had a high HFRS (>15). Ischemic stroke was the most common reason for the encounter in the high HFRS group (66.9%), followed by hemorrhagic stroke (11.7%) and AMI (7.2%). For the low HFRS group, AF was the most common reason for the encounter (30.2%), followed by AMI (23.6%) and HF (16.8%). Compared with the low-risk group, high-risk patients had a decreased ED mortality and an increased overall mortality across most CVD encounters (p <0.001). The strongest association with overall mortality was observed among patients with a high HFRS admitted for AF (aOR 27.14, 95% CI 25.03 to 29.43) and HF (aOR 13.71, 95% CI 12.95 to 14.51) compared with their low-risk counterparts. In conclusion, patients presenting to the ED with acute CVD have a significant frailty burden, with different patterns of CVD according to frailty status. Frailty is associated with an increased all-cause mortality in patients for most CVD encounters.


Subject(s)
Atrial Fibrillation , Cardiovascular Diseases , Frailty , Heart Failure , Hemorrhagic Stroke , Ischemic Stroke , Myocardial Infarction , Humans , United States/epidemiology , Cardiovascular Diseases/epidemiology , Cardiovascular Diseases/complications , Retrospective Studies , Frailty/complications , Heart Failure/complications , Atrial Fibrillation/complications , Risk Factors , Ischemic Stroke/complications , Emergency Service, Hospital
9.
bioRxiv ; 2023 Aug 18.
Article in English | MEDLINE | ID: mdl-37645924

ABSTRACT

Cryptosporidium causes debilitating diarrheal disease in patients with primary and acquired defects in T cell function. However, it has been a challenge to understand how this infection generates T cell responses and how they mediate parasite control. Here, Cryptosporidium was engineered to express a parasite effector protein (MEDLE-2) that contains the MHC-I restricted SIINFEKL epitope which is recognized by TCR transgenic OT-I CD8 + T cells. These modified parasites induced expansion of endogenous SIINFEKL-specific and OT-I CD8 + T cells that were a source of IFN-γ that could restrict growth of Cryptosporidium . This T cell response was dependent on the translocation of the effector and similar results were observed with another secreted parasite effector (ROP1). Although infection and these translocated effector proteins are restricted to intestinal epithelial cells (IEC), type I dendritic cells (cDC1) were required to generate CD8 + T cell responses to these model antigens. These data sets highlight Cryptosporidium effectors as targets of the immune system and suggest that crosstalk between enterocytes and cDC1s is crucial for CD8 + T cell responses to Cryptosporidium .

10.
J Clin Med ; 12(15)2023 Aug 03.
Article in English | MEDLINE | ID: mdl-37568511

ABSTRACT

Patients that suffer from severe multiple trauma are highly vulnerable to the development of complications that influence their outcomes. Therefore, this study aimed to evaluate the risk factors that can facilitate an early recognition of adult patients at risk. The inclusion criteria were as follows: admission to a level 1 trauma center, injury severity score (ISS) ≥ 16 (severe injury was defined by an abbreviated injury score (AIS) ≥ 3) and ≥18 years of age. Injury- and patient-associated factors were correlated with the development of four complication clusters (surgery-related, infection, thromboembolic events and organ failure) and three mortality time points (immediate (6 h after admission), early (>6 h-72 h) and late (>72 h) mortality). Statistical analysis was performed using a Chi-square, Mann-Whitney U test, Cox hazard regression analysis and binominal logistic regression analysis. In total, 383 patients with a median ISS of 24 (interquartile range (IQR) 17-27) were included. The overall mortality rate (27.4%) peaked in the early mortality group. Lactate on admission significantly correlated with immediate and early mortality. Late mortality was significantly influenced by severe head injuries in patients with a moderate ISS (ISS 16-24). In patients with a high ISS (≥25), late mortality was influenced by a higher ISS, older age and higher rates of organ failure. Complications were observed in 47.5% of all patients, with infections being seen most often. The development of complications was significantly influenced by severe extremity injuries, the duration of mechanical ventilation and length of ICU stay. Infection remains the predominant posttraumatic complication. While immediate and early mortality is mainly influenced by the severity of the initial trauma, the rates of severe head injuries influence late mortality in moderate trauma severity, while organ failure remains a relevant factor in patients with a high injury severity.

11.
Br Med Bull ; 147(1): 79-89, 2023 09 12.
Article in English | MEDLINE | ID: mdl-37328938

ABSTRACT

INTRODUCTION: Transient bone osteoporosis (TBO) is characterized by persistent pain, loss of function, no history of trauma and magnetic resonance image (MRI) findings of bone marrow edema. SOURCE OF DATA: PubMed, Google scholar, EMABSE and Web of Science were accessed in February 2023. No time constrains were used for the search. AREAS OF AGREEMENT: TBO is rare and misunderstood, typically affecting women during the third trimester of pregnancy or middle-aged men, leading to functional disability for 4-8 weeks followed by self-resolution of the symptoms. AREAS OF CONTROVERSY: Given the limited evidence in the current literature, consensus on optimal management is lacking. GROWING POINTS: This systematic review investigates current management of TBO. AREAS TIMELY FOR DEVELOPING RESEARCH: A conservative approach leads to the resolution of symptoms and MRI findings at midterm follow-up. Administration of bisphosphonates might alleviate pain and accelerate both clinical and imaging recovery.


Subject(s)
Bone Marrow Diseases , Osteoporosis , Male , Middle Aged , Pregnancy , Humans , Female , Osteoporosis/diagnostic imaging , Osteoporosis/drug therapy , Magnetic Resonance Imaging/methods , Diphosphonates/therapeutic use , Bone Marrow Diseases/diagnosis , Edema/diagnosis
12.
Fam Pract ; 40(5-6): 742-752, 2023 12 22.
Article in English | MEDLINE | ID: mdl-37237425

ABSTRACT

BACKGROUND: Low back pain (LBP) is a common reason for primary care consultation; yet doctors often find managing it challenging. An electronic decision support system for LBP (DeSSBack) was developed based on an evidence-based risk stratification tool to improve the management of patients with LBP in a Malaysian primary care setting. This pilot study aimed to assess the feasibility, acceptability, and preliminary effectiveness of DeSSBack for the conduct of a future definitive trial. METHODS: A pilot cluster randomized controlled trial (cRCT) with qualitative interviews was conducted. Each primary care doctor was considered a cluster and randomized to either the control (usual practice) or intervention (DeSSBack) group. Patient outcomes including Roland-Morris Disability Questionnaire (RMDQ), Hospital Anxiety and Depression Scale, and a 10-point pain rating scale were measured at baseline and 2-month postintervention. The doctors in the intervention group were interviewed to explore feasibility and acceptability of using DeSSBack. RESULTS: Thirty-six patients with nonspecific LBP participated in this study (intervention n = 23; control n = 13). Fidelity was poor among patients but good among doctors. The RMDQ and anxiety score had medium effect sizes of 0.718 and 0.480, respectively. The effect sizes for pain score (0.070) and depression score were small (0.087). There was appreciable acceptability and satisfaction with use of DeSSBack, as it was helpful in facilitating thorough and standardized management, providing appropriate treatment plans based on risk stratification, improving consultation time, empowering patient-centred care, and easy to use. CONCLUSIONS: A future cRCT to evaluate the effectiveness of DeSSBack is feasible to be conducted in a primary care setting with minor modifications. DeSSBack was found useful by doctors and can be improved to enhance efficiency. TRIAL REGISTRATION: The protocol of the cluster randomized controlled trial was registered at ClinicalTrials.gov (NCT04959669).


Subject(s)
Decision Support Systems, Clinical , Low Back Pain , Humans , Low Back Pain/therapy , Pilot Projects , Patient-Centered Care
13.
Eur J Med Res ; 28(1): 177, 2023 May 19.
Article in English | MEDLINE | ID: mdl-37208700

ABSTRACT

INTRODUCTION: The management of periprosthetic joint infections (PJI) of the lower limb is challenging, and evidence-based recommendations are lacking. The present clinical investigation characterized the pathogens diagnosed in patients who underwent revision surgery for  PJI of total hip arthroplasty (THA) and total knee arthroplasty (TKA). METHODS: The present study follows the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE). The institutional databases of the RWTH University Medical Centre of Aachen, Germany, were accessed. The OPS (operation and procedure codes) 5-823 and 5-821 and the ICD (International Statistical Classification of Diseases and Related Health Problems) codes T84.5, T84.7 or T84.8 were used. All patients with PJI of a previous THA and TKA who underwent revision surgery were retrieved and included for analysis. RESULTS: Data from 346 patients were collected (181 THAs and 165 TKAs). 44% (152 of 346 patients) were women. Overall, the mean age at operation was 67.8 years, and the mean BMI was 29.2 kg/m2. The mean hospitalization length was 23.5 days. 38% (132 of 346) of patients presented a recurrent infection. CONCLUSION: PJI remain a frequent cause for revisions after total hip and knee arthroplasty. Preoperative synovial fluid aspiration was positive in 37%, intraoperative microbiology was positive in 85%, and bacteraemia was present in 17% of patients. Septic shock was the major cause of in-hospital mortality. The most common cultured pathogens were Staph. epidermidis, Staph. aureus, Enterococcus faecalis, and Methicillin-resistant Staph aureus (MRSA). An improved understanding of PJI pathogens is important to plan treatment strategies and guide the choice of empirical antibiotic regimens in patients presenting with septic THAs and TKAs. LEVEL OF EVIDENCE: Level III, retrospective cohort study.


Subject(s)
Arthritis, Infectious , Arthroplasty, Replacement, Hip , Prosthesis-Related Infections , Humans , Female , Male , Prosthesis-Related Infections/surgery , Prosthesis-Related Infections/microbiology , Reoperation , Retrospective Studies , Hospital Mortality , Arthroplasty, Replacement, Hip/adverse effects , Lower Extremity/surgery
14.
J Clin Med ; 12(7)2023 Mar 27.
Article in English | MEDLINE | ID: mdl-37048604

ABSTRACT

BACKGROUND: Body mass composition (BC) was shown to correlate with outcome in patients after surgery and minor trauma. As BC is assessed using computed tomography (CT) and routinely applied in multiple trauma (MT), this study will help to analyze whether BC variables also correlate with outcome in trauma patients. MATERIALS AND METHODS: Inclusion criteria were MT (Injury Severity Score (ISS) > 15) and whole-body CT (WBCT) scan on admission. Muscle and fat tissue were assessed at the level of the fourth thoracic vertebra (T4) and the third lumbar vertebra (L3) using Slice-O-matic software, version 5.0 (Tomovision, Montreal, QC, Canada). Univariate and multivariate regression models were used with regard to outcome parameters such as duration of ventilation, hospital stay, local (i.e., pneumonia, wound infection) and systemic (i.e., MODS, SIRS) complications, and mortality. RESULTS: 297 patients were included. BC correlated with both the development and severity of complications. Skeletal muscle index (SMI) and subcutaneous adipose tissue index (SATI) at both T4 and L3 correlated positively with the occurrence of systemic infections. Local infections positively correlated with SMI at T4. Low muscle mass and high visceral adipose tissue (VAT) predicted the severity of systemic and local complications. Muscle tissue markers at both T4 and L3 predicted the severity of complications in roughly the same way. Moreover, higher muscle mass at the L3 level was significantly associated with higher overall survival, while SATI at the T4 level correlated positively with hospital stay, length of stay in the ICU, and duration of ventilation. CONCLUSIONS: A lower muscle mass and a high adipose tissue index are associated with a poor outcome in MT. For the first time, it was shown that BC at the fourth thoracic vertebra is associated with comparable results to those found at the third lumbar level.

15.
Viruses ; 15(3)2023 03 08.
Article in English | MEDLINE | ID: mdl-36992416

ABSTRACT

INTRODUCTION: Eastern equine encephalitis virus (EEEV) and Venezuelan equine encephalitis virus (VEEV) viruses are zoonotic pathogens affecting humans, particularly equines. These neuroarboviruses compromise the central nervous system and can be fatal in different hosts. Both have significantly influenced Colombia; however, few studies analyse its behaviour, and none develop maps using geographic information systems to characterise it. OBJECTIVE: To describe the temporal-spatial distribution of those viruses in Colombia between 2008 and 2019. METHODS: Retrospective cross-sectional descriptive study, based on weekly reports by municipalities of the ICA, of the surveillance of both arboviruses in equines, in Colombia, from 2008 to 2019. The data were converted into databases in Microsoft Access 365®, and multiple epidemiological maps were generated with the Kosmo RC1®3.0 software coupled to shape files of all municipalities in the country. RESULTS: In the study period, 96 cases of EEE and 70 of VEE were reported, with 58% of EEE cases occurring in 2016 and 20% of EEV cases in 2013. The most affected municipalities for EEE corresponded to the department of Casanare: Yopal (20), Aguazul (16), and Tauramena (10). In total, 40 municipalities in the country reported ≥1 case of EEE. CONCLUSIONS: The maps allow a quick appreciation of groups of neighbouring municipalities in different departments (1° political division) and regions of the country affected by those viruses, which helps consider the expansion of the disease associated with mobility and transport of equines between other municipalities, also including international borders, such as is the case with Venezuela. In that country, especially for EEV, municipalities in the department of Cesar are bordering and at risk for that arboviral infection. there is a high risk of equine encephalitis outbreaks, especially for VEE. This poses a risk also, for municipalities in the department of Cesar, bordering with Venezuela.


Subject(s)
Encephalitis Virus, Venezuelan Equine , Encephalomyelitis, Venezuelan Equine , Horses , Animals , Colombia/epidemiology , Cross-Sectional Studies , Encephalomyelitis, Venezuelan Equine/epidemiology , Geographic Information Systems , Horses/virology , Retrospective Studies
16.
Front Immunol ; 14: 997376, 2023.
Article in English | MEDLINE | ID: mdl-36960049

ABSTRACT

At homeostasis, a substantial proportion of Foxp3+ T regulatory cells (Tregs) have an activated phenotype associated with enhanced TCR signals and these effector Treg cells (eTregs) co-express elevated levels of PD-1 and CTLA-4. Short term in vivo blockade of the PD-1 or CTLA-4 pathways results in increased eTreg populations, while combination blockade of both pathways had an additive effect. Mechanistically, combination blockade resulted in a reduction of suppressive phospho-SHP2 Y580 in eTreg cells which was associated with increased proliferation, enhanced production of IL-10, and reduced dendritic cell and macrophage expression of CD80 and MHC-II. Thus, at homeostasis, PD-1 and CTLA-4 function additively to regulate eTreg function and the ability to target these pathways in Treg cells may be useful to modulate inflammation.


Subject(s)
Programmed Cell Death 1 Receptor , T-Lymphocytes, Regulatory , T-Lymphocytes, Regulatory/metabolism , CTLA-4 Antigen/genetics , Programmed Cell Death 1 Receptor/metabolism , B7-1 Antigen/metabolism , Homeostasis
17.
Nanomaterials (Basel) ; 13(3)2023 Feb 01.
Article in English | MEDLINE | ID: mdl-36770554

ABSTRACT

Air transports several pollutants, including particulate matter (PM), which can produce cardiovascular and respiratory diseases. Thus, it is a challenge to control pollutant emissions before releasing them to the environment. Until now, filtration has been the most efficient processes for removing PM. Therefore, the electrospinning procedure has been applied to obtain membranes with a high filtration efficiency and low pressure drop. This review addressed the synthesis of polymers that are used for fabricating high-performance membranes by electrospinning to remove air pollutants. Then, the most influential parameters to produce electrospun membranes are indicated. The main results show that electrospun membranes are an excellent alternative to having air filters due to the versatility of the process, the capacity for controlling the fiber diameter, porosity, high filtration efficiency and low-pressure drop.

18.
J Orthop Surg Res ; 18(1): 67, 2023 Jan 27.
Article in English | MEDLINE | ID: mdl-36707868

ABSTRACT

INTRODUCTION: Arthroscopic labral procedures are frequently undertaken in patients with femoroacetabular impingement (FAI). The role of arthroscopic femoral neck osteoplasty is well established, but less is known about labral procedures. This study evaluates the midterm efficacy and feasibility of arthroscopic osteoplasty with concomitant labral debridement for cam impingement in active adults. METHODS: The present study was conducted according to the STROBE Statement. All 108 patients who underwent primary hip arthroscopy for cam type FAI combined with labral debridement were considered. Axial and anteroposterior plain radiographs of the pelvis were obtained preoperatively to identify the cam deformity and assess the presence of osteoarthritis, the lateral centre-edge angle, and the alpha angle. The ROM (flexion, extension, abduction, adduction, and intra/extra rotation) was evaluated. The following PROMs were administered: visual analogic scale (VAS), Tegner Activity Scale, non-arthritic hip score (NAHS), the international Hip Outcome Tool (iHOT-33) overall score, and related subscales: symptoms and functional limitations, sports and recreational activities, job-related concerns, and social, emotional, and lifestyle concerns. RESULTS: At a mean of 2.0 ± 1.1 months, all 108 patients returned to their daily activities with no limitation. At a mean of 2.6 ± 1.4 months, all 108 patients were able to return to sport with no limitation. At 11.9 ± 2.1-month follow-up, no differences were reported in the range of motion compared to baseline: flexion (P = 0.3), extension (P = 0.09), abduction (P = 0.1), adduction (P = 0.3), internal rotation (P = 0.4), and external rotation (P = 0.6). At 72.8 ± 21.7-month follow-up, the mean VAS score was 1.7 ± 3.0, Tegner Activity Scale 3.5 ± 1.4, NAHS 92.1 ± 21.5, iHOT33 83.3 ± 27.2. At a mean of 21.7 ± 15.5 months following the index procedure, 14 of 108 patients had undergone total hip arthroplasty. No further revisions or complications were reported. CONCLUSION: Arthroscopic femoral neck osteoplasty with concomitant labral debridement for cam type of FAI in active adults yields the reliable results, with a rate of progression to total hip arthroplasty of 13% (14 of 108) at 3-year follow-up. All patients returned to their daily activities with no limitation 2 months postoperatively. Within 3 months, all patients returned to sport with no limitations. No complication related to the index procedure was reported, and no further arthroscopic procedures were necessary.


Subject(s)
Femoracetabular Impingement , Adult , Humans , Femoracetabular Impingement/diagnostic imaging , Femoracetabular Impingement/surgery , Hip Joint/diagnostic imaging , Hip Joint/surgery , Femur Neck/diagnostic imaging , Femur Neck/surgery , Debridement , Treatment Outcome , Arthroscopy/methods , Follow-Up Studies
19.
J Knee Surg ; 36(3): 254-260, 2023 Feb.
Article in English | MEDLINE | ID: mdl-34261156

ABSTRACT

The Caton-Deschamps Index (CDI) is a measurement used to evaluate patella alta based on true lateral radiographs; however, no prior study has investigated how altering the degree of radiograph aberrancy affects CDI measurement. The primary and secondary purpose of this study was to evaluate effects of rotational radiographic changes on patella height measurements and compare these findings to MRI measurements, respectively. Five cadaver knees (n = 5) were utilized in this study. True lateral radiographs were obtained for each specimen by using a fluoroscopic C-arm machine. The C-arm was then altered in two planes (axial and coronal) in both the clockwise and counterclockwise direction and radiographs were taken at 5, 10, and 15 degrees of error from the true lateral position. A CDI measurement of each specimen was performed based on sagittal magnetic resonance imaging (MRI) slices and compared with radiographic CDI measurements. Three orthopedic surgeons measured the CDI for each radiograph and MRI performed. Interrater reliability and changes in CDI were analyzed. Clinically significant difference in CDI was set to 0.1. Mean intraclass correlation coefficient was high (≥0.7) at true lateral and at all varying degrees of error. When performing a pairwise comparison of mean CDI from the true lateral position to increasing degrees of error, statistically significant differences were observed in the axial plane. The largest change in CDI measurements was seen with rotational malposition in the axial plane and counterclockwise direction. No statistically significant differences in mean CDI were observed in the coronal plane. The change in CDI from the true lateral position reached an absolute maximum of at least 0.1 in all four scenarios at each tested degree of error. This study found that aberrant radiographic rotation in the axial plane resulted in a significantly different mean CDI measurement when compared with true lateral radiographs. All degrees of error in both directions and in both planes could have a clinically significant effect on CDI (≥0.1). Our findings confirm the importance of a perfect true lateral radiograph when measuring patella height.


Subject(s)
Patella , Humans , Patella/diagnostic imaging , Patella/surgery , Rotation , Reproducibility of Results , Radiography , Cadaver
20.
Psychol Serv ; 20(2): 318-325, 2023 May.
Article in English | MEDLINE | ID: mdl-35311341

ABSTRACT

Mental health professionals working in the juvenile justice system work with clients who have complex mental health needs putting them at increased risk of burnout and vicarious trauma. Clinical supervision can help beginning counselors provide competent services and, at the same time, protect them from burnout. This article shows how supervisors can use an Adlerian-informed supervision method that integrates the Respectfully Curious Inquiry/Therapeutic Encouragement (RCI/TE) framework with the discrimination model of supervision to increase the supervisee's experience of the Crucial Cs. Supervisors can protect supervisees from burnout and vicarious trauma by increasing feelings of connection, significance, competence, and courage. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Subject(s)
Burnout, Professional , Compassion Fatigue , Counselors , Humans , Counselors/psychology , Burnout, Professional/prevention & control , Health Personnel/psychology
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